def test_added_descriptor_table_caching(self) -> None:
cache_elem = DataMemoryElement(readonly=False)
descrs = [random_descriptor() for _ in range(3)]
expected_table = dict((r.uuid(), r) for r in descrs)
i = MemoryDescriptorSet(cache_elem)
assert i.cache_element is not None
self.assertTrue(cache_elem.is_empty())
# Should add descriptors to table, caching to writable element.
i.add_many_descriptors(descrs)
self.assertFalse(cache_elem.is_empty())
self.assertEqual(pickle.loads(i.cache_element.get_bytes()),
expected_table)
# Changing the internal table (remove, add) it should reflect in
# cache
new_d = random_descriptor()
expected_table[new_d.uuid()] = new_d
i.add_descriptor(new_d)
self.assertEqual(pickle.loads(i.cache_element.get_bytes()),
expected_table)
rm_d = list(expected_table.values())[0]
del expected_table[rm_d.uuid()]
i.remove_descriptor(rm_d.uuid())
self.assertEqual(pickle.loads(i.cache_element.get_bytes()),
expected_table)
def test_remove(self) -> None:
i = MemoryDescriptorSet()
descrs = [random_descriptor() for _ in range(100)]
i.add_many_descriptors(descrs)
self.assertEqual(len(i), 100)
self.assertEqual(list(i.iterdescriptors()), descrs)
# remove singles
i.remove_descriptor(descrs[0].uuid())
self.assertEqual(len(i), 99)
self.assertEqual(set(i.iterdescriptors()), set(descrs[1:]))
# remove many
rm_d = descrs[slice(45, 80, 3)]
i.remove_many_descriptors((d.uuid() for d in rm_d))
self.assertEqual(len(i), 99 - len(rm_d))
self.assertEqual(set(i.iterdescriptors()),
set(descrs[1:]).difference(rm_d))
